EXACTLY!! Company A fired the wrong person. DDoS internally. Company B has a Business partner that has VPN access, that get's infected. Company C has a home user that uses VPN on a cable modem. he gets infected.... Virus writers will see this and use it... What better DDoS method is there than to take down the network equipment.... I see this as a make or break.... If someone does not upgrade, well think of this as a roll-coaster. Remember the sign? This ride is not advised for people with bad backs, pregnant ladies...... This will be a long year of patches and learning experiences... J -----Original Message----- From: Valdis.Kletnieks@vt.edu [mailto:Valdis.Kletnieks@vt.edu] Sent: Tuesday, July 22, 2003 9:55 AM To: Niels Bakker Cc: nanog@merit.edu Subject: Re: Cisco vulnerability and dangerous filtering techniques On Tue, 22 Jul 2003 15:40:02 +0200, Niels Bakker <niels=nanog@bakker.net> said:

* adamm@sihope.com (Adam Maloney) [Tue 22 Jul 2003, 15:33 CEST]:

...

The next worm taking advantage of the latest Windows'

vulnerabilities

...

is more or less inevitable. Someone somewhere has to be writing it. So why not include the cisco exploit in the worm payload?

Why would a worm disable a vital component on its path to new infections?

It's not part of the spread-the-worm code, it's part of the DDoS engine that it leaves behind. If you get lucky, one of your 20K zombies is the other side of a router along with whoever you're pissed at and want to DDoS, so you send the command, and the zombie sprays 76 packets, goes to sleep for 30 mins, sprays another 76.. lather rinse repeat. I'm going to go out on a limb and say that at least 30% of Ciscos are installed in places that would, if hit with this, have NO CLUE why their router needs to be power cycled every 30 mins.....